Lock-down shingle



Aug- 19, 1952 E. .LBoAR-INI l2,607,306

LOCK-DOWN SHINGLE Filed May 25, 195o {'6. flo

24 Inve'nor Fdward e): oqrz'y Patented Aug. 19, 1952 LOCK-DOWN SHINGLE Edward j.. Boarini, Chicago, AIll'.,assignor to CertainfTeed- Products Corporation, Ardmore, Pa., f ay corporation oi Maryland Y A MedicationMayas,195o,sannita.164,093L f -rf w 3 Claims. (cima- 1).

This invention relates to roofing and particularly to asphalt shingles of the interlocking type.

This invention has for its object the provision of a new and improved form and arrangement of shingle by which the lower end portion of each of such shingles on a roof has interlocking engagement with the adjacent shingles so as to prevent the exposed portions of the shingles from being bent up by the wind.' My improved shingle is made preferably' from flexible prepared roong material of the type. commercially employed in exceedingly large amounts, and it is oney of my objects to make my improved shingle of such size and shape as to enable it to be cut. readily from. a web of roofing felt with very little waste. It is another and related object of my invention to. give my improved shingle such conformation as to. enableme to produce a roof covering of completev double thickness atall points Without undue overlapping of the shingles and' with effective protection against the passage of rain through the covering.

Another object. of my invention is to provide la `form of shingle as above specied'in which there. shall be a comparatively large nailing zone within which the workman laying the. shingles may be able quickly and easily to apply.y the securing nails in the proper positions without danger that the nails shall be exposed at the outer face of the completed roof, whereby the operation of laying the shingles shall be4 speeded up so far as is practically rpossible.

It is still another object of my invention to provide a form of shingle by the use of which a highly decorative type ofl roof covering shall be obtainable. To this end, I have provided for a variation in the color in the. face of my shingle whereby there shall be a band of dilierent colors dividing the exposed face portion of the shingle and. thus breaking up the pattern into comparatively small units, with the band parallel tobut spaced downwardly a slight'distance from and with respect to the` lower edges-V of the shingles at opposite sides, so as to thereby avoid undesired monotony of appearance in the finished roof.

Other and further objects of the present invention will be apparenti from the following de- Other embodiments of the. invention embodying the samel or equivalent principlemay be used kand. structural changes may be made as desired by those skilled in they-art; without from the present i-nvention. -;y

Fig. 1 isv a, perspective View oi a fragmentary portion of a roof embodying my invention;

Fig. 2` is. a face view of a strip of. feltvroong showing how a seriesof my improved. shingles may be cut therefrom;

Fig. 3 isa cross-sectional view through a plu.- rality' of the shingles of thefinvention arranged in cooperative. relationship;` the view being taken substantially along the.y line 3f-3 in Fig'.v LL; and

Fig. 4 is a face view et, a plurality of. my im.- proved shingles/in their cooperativeI relationship on a'roof, with parts et some of the, shingles broken. away, with` the. outlines. ofthe several shingles completed vin. dottedr lines,. and` with certain. of the. shinglesprovided. with surface shading for better` distinguishing the vseveral shingles from each other. Y

Inthe diierent. figures .ot the drawing,v the same reference characters;- are. employedlfor indicating the. various. parts.. Asis clearly shown in Fig- 2. a seriesy ofi shinglesrfware cut: from a strip of rooiing.V felt, with alternate shingles in diierentialarrangement so -as to provide. for their production with afminimum of waste'material, the several waste .parts being indicated by the reference characterv i3.. Each of. my improved shingles comprises a. headportion I4 and a shank. portion I5y of. just.- half as great width as that. of the head, portion,v such, shank portion being in centered position transversely with respect to the `head portion... In..my improved shingle as illustrated, the head portion-[4'. andthe shank` portion liare. oi thel same `size vertically, the distance-.gfromthe top. edge/.frio theV bottom edge of thehead portion being. same. as'the distance from. the topv edge to'lthebot'tomedge of the shank portion. ...Aliv opposite side edges, the. shank portion. l5. isprovided with 'laterally projecting tabs. |56 formedintegrally,with the shank portion and extending f iroin. the lower edge.v of the shank portion to points positioned at one-third. of the. distance-from saidzlower1 edge departing vof-"the'shank portion. to the; lower edgeof the head portion.. Each` oi the4 'tabs4 Iii` is: provided at itsi upperv end' withV anV upward projection` l1 standingv in slightly spaced; relationship tothe adjacenty shank portion,y asindieated at LIS; the throat or upwardly facing, edgeof; which space is located upwardly from the lower edge in an amount equal to one-third of the distance between the lower edge of the shank I and the lower edge of the head portion I5.

In the form of shingle as illustrated in Fig. 2, the top face of the shingle is in the form of a layer of grit particles applied to the coated strip of felt as the strip is moved lengthwise, such grit particles being applied and pressed into position Yatthe VVtopi'ace of the shingle by the use of anyapproved form of apparatus, as is well understood in the art. In the embodiment of shingle as shown in Fig. 2, the grit particles are of a selected color but with two narrow 1 zones or bands I8 and I9 of thegrit particles of a different color from that.' ofutheparticles shingles of the preceding tier. In the arrangement as shown in Fig. 4, nails 30 secure the shingles rmly in position, such nails being driven through the head portions I4 of the shingles in such position as to be covered by the shank portions I5 of the next higher tier of shingles.

When the hooks of a shingle provided by the tabs I6 vand their upward projections I'I, and positioned in vfairly close 'proximityto the bottom edge of the shingle, are engaged as above described with the heads and the shanks of the shingles of the next lower tier, such shingle is held very strongly in position so as to prevent V its being whipped and bent upwardly by the wind.

'I'hisis particularly so in view of the fact that in myimproved arrangement the lower edge of each tion I9 on the shank I5 of the shingle and the 1 band portion I8 on the head portion I4 of they shingle are at points located at the same distance from the lower edge of the shank I5 and the upper edge of the head portion I4, and this spacing is somewhat less than the/distance between the lower edge of the head portion I4 and the bottom of the throat I1S. The'band portion I9 and the band portion I8 on alternate shingles are formed by the same s-'trip of contrasting granules of the basic material, vas will be evident in Fig. 2. .y

In the arrangement as illustrated in Fig. 4,

which comprises a number of shinglesjust suiicient for showing their relationships to each other, there are twooshingles 20 and 2| in the rst tier with their lower end portions cut away to provide an even bottom edge for the roof, with three shingles 22, 23 and 24 in the next higher tier, two shingles 25 and 26 in the third tier, two

more shingles 21- and A28fin the fourth tier, and a single shingle 29 at the top edge of the view. In'each tier comprising a, plurality of shingles, the head portions are positioned with their lside edges abutting, and the tabs IB` and the hooks provided by the projections I'I, of the several shingles in each tier, afford a double locking action in that the tabs I6 extend under the shank rportions I5 of the shingles of the preceding tier,

while such projectionsI'I project upwardly under the head portions of lthe shingles of the next lower or preceding tier. j The upper edges of the tabs I6', between the 'shank I5 and the projecvtions I1, serve, of course,V as abutment surfaces which engagethe lower edges of thejhead portions of the next lowerftier of shingles. This manner of engagementjof the several parts and surfaces of adjacent shingles aiords an veihcient interlock for the lower corners of the shank poi'- tions I5. L l

By such an arrangement :carried out through a complete'roof, full double coverage is provided throughout the roof, except Yfor the portion of theroof immediately adjacent to the lower edge,A

and in this lower edge, portion of VVthe" roof it is, of course, customary to aiord a i starter or drip Y strip S of mineralsurfaced roofing material, as

shingle lies smoothly on a directly underlying yshingle -without anything to cause the edge to buckle or bulge upwardly away from the shingle below. The tabs I6 of each shingle and the upwardly directed projections I'I on said tabs are completely covered by the shank portions of the shingles at either side, and each of said tabs and its projections are of such size as to have a strong frictional and mechanical locking hold for resisting withdrawal of the hookv from operative position.

In the arrangement of Fig. 4, the band I8 is in every instance concealed, while the band I9 of each shingle is disposed somewhat below the lower edges of the adjacent shingles of the next higher tier, thereby serving to break up the exposed face portions of the several shingles. As a result of this arrangement, my improved roof has a very decorative and distinctive appearance.

In Fig. l, the several shingles are formed and positionedlin accordance with the principles explained in connection with the other iigures of the drawing, but the shingles are all designated by the reference character I0 without any attempt to connect up the showing of this figure with Fig. 4 except in a very general way.

While I prefer to employ the form of shingles as shown by my drawing and as above described, my invention is not to be limited'thereto except so far as the same may be specically claimed, it being understood that changes might well be made in the form and arrangement Without departing from the spirit of the invention.

I claim:

1. Ashingle made from a piece of felt and comprising a head dened by a straight horizontal upper edge and continuous straight vertical side edges, a shank extending below the head in centered position with respect thereto and of just half the width of said head, with the head portions extending transversely beyond the shank dened at their bottom edges by straight horizontal lines and with the shank at its side edges defined by straight vertical lines, and tabs at opposite sides of the' shank formed integrally with the shank from the lower 'edge of the shank to points at a substantial distance from the lower edge of the shank and having upwardlyrdirected projections thereon acting as hooks adapted by engagement with the lower edges of' the head portions of a lower tier of similar associated shingles to determine the relative positions of said shingles vertically.

2. A shingle made from a pieceA ofv felt and comprising a rectangular head vhaving straight and continuous top and side edges, a shank having parallel vertical side edges and extending below the head in centeredv position with respect thereto and of just half .the width of said head,

5 said head and said shank being of the same length vertically, and tabs formed integrally with said shank at opposite side edges thereof from the lower edge of the shank to points position at about one-third of the distance from said lower edge of the shank to the lower edge of the head, and having upwardly directed projections thereon acting as hooks adapted by engagement with the lower edges of the head portions of a lower tier of similar associated shingles to determine the relative positions of said shingles vertically.

3. A shingle as specied in claim 2, in which the tabs engage the side edges of the Shanks of said associated shingles laid with their heads in edge to edge relationship to each other.

EDWARD J. BOARINI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,438,571 Abraham Dec. 12, 1922 1,825,576 Butterick Sept. 29, 1931 2,266,376 Miller Dec. 16, 1941 2,437,874 Black Mar. 16, 1948 2.444.623 Abraham July 6, 1948 

